Observation 28005: Bolbitius reticulatus (Pers.) Ricken

When: 2009-11-10

Collection location: Briones Regional Park, Contra Costa Co., California, USA [Click for map]

Who: Richard Sullivan (enchplant)

No specimen available

Growing on a decomposed oak log.

It has that dimpled cap that a Bolbitius has also, and it is growing on wood. But it is black.


Proposed Names

2% (5)
Recognized by sight: Pinkish gills, spores brown ( I’m waiting on a print)
Based on microscopic features: Spores smooth 11-12µm x 5-6µm, No cystidia observed on gills.
-39% (3)
Recognized by sight
65% (5)
Recognized by sight: Buttons start out dark, margin fades when cap opens and mature cap fade in sunlight,
Used references: Watling, R. 1982. British Fungus Flora: Agarics and Boleti Vol.3. Bolbitiaceae: Agrocybe, Bolbitius and Conocybe. Royal Botanic Garden, Her Majesty’s Stationary Office, Edinburgh, England. 139p.
Watling, Roy and Norma M. Gregory. 1981. Census Catalogue of World Members of the Bolbitiaceae. Bibliotheca Mycologica Band 82, J. Cramer, Vaduz. 224p.

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Add Comment
Spore print is?
By: Johannes Harnisch (Johann Harnisch)
2009-11-11 16:22:08 CST (-0500)
Need a radial seciton of cap surface.
By: Douglas Smith (douglas)
2009-11-10 22:30:35 CST (-0500)

Need a radial section of the cap surface, and see how that is made up. Not sure this is Bolbitius, but that will tell you. Are you sure there is no cystidia?

Created: 2009-11-10 19:49:58 CST (-0500)
Last modified: 2012-11-24 09:52:37 CST (-0500)
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